Granted Patent
Utility
US 6,540,474 · App. 09/885,236
Side-channel pump
Inventors:
Peter Marx, Cicero Constantin, Jörg Deubner
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Jun 20, 2001
Inventors
Peter Marx
Cicero Constantin
Jörg Deubner
Assignee (at issue)
Mannesmann VDO AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.